EMASS/Grau

The silo management software for the EMASS (in North America) or Grau silos is a program called DAS. DAS acts as a front end for the silo control program called AMU. When the silo is configured, the silo administrator gives each drive a symbolic name. The symbolic name can be any alphanumeric string.

To set up DAS to work with Backup, follow these steps:

1. Ask the silo administrator to configure DAS to accept commands from your Backup server or storage node machine.

2. Ask the silo administrator to either:

   • Use the dasadmin allocd command to allocate one or more devices to the Backup server or storage node

   • Configure your Backup server or storage node as an administrator, so you can enter the dasadmin allocd command to allocate devices from your Backup server or storage node machine

To find the names assigned to the devices in the silo, you can use a utility called dasadmin.

1. Set the following environment variables:

   • DAS_SERVER, the hostname of the silo management server, which runs DAS

   • DAS_CLIENT, the hostname of the Backup server or storage node

   • ACI_MEDIA_TYPE, one of: 3480, CD_THICK, CD_THIN, DECDLT, 8MM, 4MM, D2, VHS, 3590, CD, TRAVAN, DTF, BETACAM, AUDIO_TAPE and DAS_MEDIUM, same value as ACI_MEDIA_TYPE

2. Issue the following command to see a list of drives and the hostnames to which they are allocated:

dasadmin ld